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G. D. CASPER Oct. 4,1921. Re. 16,752

Orilinal Filed April 9, 1923 :Reissued Oct. 4, 1927.

UNITED STATES PATENT OFFICE.

GEORGE D. CASPER, OF NEW YORK, N. Y.,

SCHUSKY, LONG ISLAND CITY, NEWv YORK..

ASSIGNOR 0F ONE-HALF To WILLIAM W.

DRAIN TRAP.

Original No. 1,571,707, dated February 2, 1926, Serial No. 630,710, filed April 9, 1023. Application for reissue filed August 3, 1927. Serial No. 210,443.

This invention relates to drain traps and particularly to drain traps adapted for connection to laundry tubs, kitchen sinks and the like.

6 The main object of the invention is to provide adrain trap for connection to such receptacles which will not require lead pipes and wiped joints but which can be quickly and conveniently installed merely by using wrenches and with full compliance with the sanitary regulations and ordinances now customary in towns and cities.

Mother object is to providesuch a dram trap that will be adapted for connection to a plurality of tubs, sinks or the like and which will prevent the passage of sewer gas or objectionable odors, om one tub or other receptacle to another in the same system,

through the piping.

The means I pli'shing the a ove objects together with other advantageous features of in improved drain trap are illustrated in the rawing accompany-mg and forming part of this specication, and in which Figure 1 is a vertical elevation of a drain trap embodying my 1mprovements.

Fig. 2 is a plan ofa and Fig. 3 is a perspective view showing one manner of utilizing my improved drain tra Iiike' characters' of reference refer to like parts in all the fi ures of the drawing.

Referring to ig. 1, the part or member of the drain trap which contains the outlet is designated by the numeral 2 and 3 indicates the outlet thereof. There is also a juncture or socket ortion nearest to the inlet of the trap which juncture portion is indicated by 4, and there is preferably a socket therein such as 5. There is a member 6 which I term a connection or inlet member from the fact that the pipe connections are joined to this member. In the drawing I have shown two such connections for connectin the trap to twopipes such as indicated by 7 and 8 respectively. Any suitable means may be provided to connect the pipes 7 and 8 to the member 6 but ordinarily I employ couplings such 9 composed of a shouldered coupling-nut 11 portion of the same,

refer to employ for a'ccoin-- said member and the mem sect-ion partly in.

. member 6 and up changed to as 9 and 10, that at and a acking l2 clamped between a flange 13 on t e pipe and the seat 14 on the member 6. A shoulder 15 on engages the flange 13 of the pipe and causes the same to press against the packing 12 when the nut 11 is tightened on the thread 16 on the connection portion of the member 6. The coupling 10 is similar to that for the joint 4 as will be clear from the drawmg.

The member 6 is held connected to the main portion 2 of the trap by any suitable means such as the coupling nut 17. The said coupling surrounds the tubular portion 18 of the member 6 which portion is preferably adapted to enter the socket 5 in theqnember 2. The nut 17 is' provided with the coupling nut 11 which is placed suitable packing material 22 so that on clamping the nut 17 by turning its threaded portion on the thread 23 of the member 2, said packin' material-22 will be squeezed against the tu ular extension 18 of the member 6 and make a tight joint between In, the interior of: the member 6 there is a partition '24 which divides the upper part of the interior of said member into two portionsv 25 and 26 and there is a free lower edge 27 of tends down considerably below the top of the water seal of the tm and which is indicated by 28, so that a though water can flow down each of the ipes 7 and 8 and throu h the trap throug the chambers or branch passages 25 and 26 respectively and thence through the portion 18 and the member 2 to the outlet, no gases or odors can pass around from the pipe 7 through the the pipe 8 or vice versa. As indicated in Fig. 1 of the drawin the cross-sectional area of the lower ori cc of the inlet member6 exceeds an single crosssection of either of the branch assages 25 ,and 26. This arrangement facilitates the sweeping of solidified through the trap. and avolds the danger of stoppage. The member 6 is adapted to be many different positions relatively to the member 2. 'That is, it can be turned about on the axis of the socket 5 and can be moved upward or downward on previously loosening the nut 17, and when a ase and soap said partition which exdesired position of the member is attained the said nut can be again tightened securing the members 2 and 6 in the selected position.

Fig. 3 illustrates drain trap which is here designated by T andshown connected to a sink 30 and two laundry tubs 31 and 32. Two pipes 7 and 8 are used, the pipe 7 connected to the sink 30 and the pi e 8 connected to the double fitting 33 whic in turn is connected to both the tubs 31 and 32. v

From the foregoing it will be clear that no lead piping is necessary in my improved installation and that the various couplings or pipe connections can be installed merely by the use of wrenches, and it will also be noted that no wiped joints are required for any of the trap connections. It will be obvious that so long as the water seal remains in the trap, no foul airor gas can pass from the tubs 31, 32- through the pipe 8, trap T, and then up th of the outlet of. the sink 30.

one manner of using the e pipe 7 and out I claim A self-cleaning drain trap having a water seal and embodying a member having an outlet and a juncture portion on the inlet part thereof below the Water seal surface, an inlet member having a portion to fit said juncture portion of the first-mentioned member and hav'ng two pipe connections both above the water seal, joining branch passages separated by a Wall that is'above said juncture portion and whose lower edge is below the water seal surface whereby the inlet pipes are water-sealed from each other, and in which inlet member the area of the lower orifice thereof exceeds any single cross section of either of said branch passages, and means below the water seal surface whereby the first-mentioned member and the member having said pipe connections are joined together at said juncture portion. In testimony whereof I afiiX my signature.

GEORGE D. CASPER. 

